THE EXPERIMENT IN SOUTH DAKOTA. 27 



Tlio first crop only was harvested for hay, the second bein«; left 

 to go to seed. The seed production of the various strains will be 

 made the subject of further study. 



The product of the plats sown with Western Bulked, Illinois, Iowa, 

 Micliit>:;an, Nebraska, and Ore^jon seed was slio;htly reduced by a streak 

 of subsoil which cropped out in these plats and on which the stand 

 was not so perfect as on the other parts of the field. The resulting 

 dilference would amount to. but a small percentage and would not 

 modify materially the results as tabulated. 



The Missouri plat was slightly injured in the spring by the work 

 of ground moles, but seemed to have fully recovered from the injury 

 before the cutting of the hay cro|). 



The only plat upon which any dodder appeared was that sown 

 with the seed from Tcmiessee. It was promptly subdued and prac- 

 tically no harm resulted from it. 



Although it would be unsafe to generalize from the results of one 

 year's observation, it is interesting to note the fact that the seed 

 produced in Nebraska and Iowa gave the lowest yields. This may 

 be partiallv explained by the inferiority of the stand caused by the 

 clay streak referred to above. However, it appears to the writer 

 that this explanation is inadequate in view of the fact that the com- 

 mercial samples which were grown on adjoining plats show no cor- 

 responding reductions in yield. As noted above, the Michigan, 

 Illinois, and Oregon plats were crossed by the same streak of clayey 

 subsoil. 



YIELD OF THE OREL CLOVER COMPARED WITH OTHER STRAINS. 



The total yield of all plats was 108,220 pounds, or about 54.1 tons. 

 The highest yield was that of the hairless Orel clover, 7,100 pounds 

 per acre; the lowest was from, the Nebraska seed, 3,590 pounds, while 

 the average for all plats was 5,153 pounds. It is interesting to note 

 that three of the four Russian strains yielded considerably above the 

 average for all plats. 



The Orel clover No. 16 yielded 3,510 pounds of hay to the acre 

 more than the Nebraska clover, giving a product almost double 

 that of the latter. It produced more than 1,000 pounds more than 

 its nearest competitor, one of the commercial samples, and almost 

 a ton above the average for all plats. 



THE EXPERIMENT IN SOUTH DAKOTA. 



LOCATION. 



The work for South Dakota is being carried on in cooperation with 

 Flam Brothers on their farm near Bigstone, Grant County. Bigstone, 

 which is situated 54° 10' north latitude, 96° 26' west longitude, is 



95 



